COLORS AND MARKINGS OF ANIMALS 



287 



immovable, dust-colored quail which waits until the hawk, 



and the rabbit, colored 



it, flies away 

 grass and ^ 



not perceiving 

 like the dead 

 ground about it, which lies 

 rigid until you are fairly 

 upon it, although it sees 

 your every movement? 

 Swift of foot as the rabbit 

 is, it relies more for safety 

 on its protective color than 

 on its fleetness. Among 

 the green leaves of trees 

 live the katydids ; they are 

 all green. On the great 

 everlasting snow-fields of 

 the arctic regions live foxes 

 and hares and ptarmigan, 

 all white as the snow itself, 

 although their near cousins 

 the foxes, hares, and ptar- 

 migans of warmer regions, 

 where the snow falls but 

 occasionally, and the earth 

 surface is usually brown 

 and dark, are reddish or 

 gray or brown. In the 

 desert the lizards and 

 snakes and insects are 

 mottled gray and sand- 

 colored, while in the ever- 

 green foliage of trees in 

 warm regions live green 

 tree-frogs and tree-snakes and insects. 



Special protective resemblance. — But some animal: 

 show more than just a general resemblance to, or har 



Fig. 225. 

 insect, 

 (From 



— The twig (jr walking-stick 

 Diaphcrojiicra f e in r a t a 

 pecimen.) 



